Powellite
is a rare member of the Scheelite group of minerals
that also includes Scheelite,
and Wulfenite.
Powellite is
an extremely rare gem, among the rarest of collector's
gems. Prior to a discovery of Powellite crystals
at Pandulena Hill, Nasik District, Maharashtra, India it was unknown as a
gem. Gem quality crystals have since been found in the
Jalgoan District of India as well. The transparent crystals from these locations are very small so gems are
also small. There are several other locations worldwide
where
Powellite is found but none produce gem quality crystals.